Steam-generator



(No Model.)

' A. HORN.

STEAM GENERATOR.

No. 336,114. Patented Feb-16. 1886..

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UNITED STATES ATENT Erica ADOLPH HORN, OF CHICAGO, ILLINOIS.

STEAMGENERATOR.

SIPECIFICAI'ION forming part of Letters Patent No. 336,11l, dated February 16, 1886.

Application filed Decemberji, 1885. Serial No. 185,033. (No model.)

To all whom it may concern.-

Be it known that I, ADoLPH Hoax, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Steam Generators, of which the following is a specification,reference being had therein to the accompanying draw- 111 lhis invention relates to steam-boilcrs,and more particularly to upright boilers; and the object I have in view is to increase the heating-surface and to accelerate the circulation of the water for the purpose of rendering the parts exposed to the tireless liableto be overheated, to obviate the incrnstation of sediments, and thereby to make the boiler more durable and eifective and less liable to explode.

Myinvention therefore consists ofthe novel devices and combinations of devices hereinafter described and specifically claimed.

The accompanying drawing represents a vertical section through the center of the boiler, in which A denotes the outside shell; B, the crown sheet; 0, the firebox; D, the grate; E, the fuel-door; F, the smokeflne, and G the steam-pipe.

Between the outside shell, A, and the firebox D is an annular water-space, H; and my improvement consists in placing diametrically through such fire-box a series of flues, I, one above the other, and occupying the space in the upper portion of such firebox. These flues I form communicating channels between the water-spaces from opposite sides of the boiler, and each flue is placed on an inclination,for the purpose that the steam generated therein will rise through the higher end, to be replaced by water entering through the lower end of such flue, thereby producing a strong circulation of the water through such fiues, and for the purpose that such circulation may be uniform on all sides of the boiler I arrange the several flues I to be in all directions of the compass, or so that each flue stands on an angle relative to any other flue.

Opposite each flue I, I provide an opening in.

shell A, that is closed in the usual manner by means of a plate, a, having screw-stud b, that passes through yoke c, and is drawn to itsseat by a screw-nut, cl.- These openings are for inspecting, cleaning, or replacing a flue whenever it becomes necessary.

I am aware that in 'steamgenerators of this class flues have been passed through the firebox to communicate at each end with a waterspace surrounding the said fire-box, such fines being arranged in layers, all the flues of one layer opening on the same side of the firebox, and the lines of the second layer being at right angle to those of the first; but I am not aware that fines have been passed through the fire-box so that each one is placed at angle to all the others; and therefore,

' That I claim is In asteam-generator, the combination,with the fire-box and with an annular water-space surrounding the same, of aseries of flues passing through the fire-box and communicating with the water-space, each flue passing diagonally through the firebox, and at a different angle to all the remaining flues, as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

ADOLPH HORN.

WVitnesses:

RICHARD REINIBOLD, IIA'RRIS W. HUEHL. 

